Autobalancing MOSFET for 3V supercapacitors

Advanced Linear Devices Inc. (ALD) has introduced a new dual MOSFET designed specifically for managing the power of 3V supercapacitors. The ALD910030 dual MOSFET is a groundbreaking development that allows for precise voltage and leakage current balancing, expanding the capabilities to support higher-voltage supercapacitors.

This innovative Supercapacitor Auto-Balancing (SAB) MOSFET is engineered to operate with minimal power consumption for cell balancing, effectively mitigating potential catastrophic failures. By dynamically adjusting drain currents, the SAB MOSFET ensures voltage balance, offering protection against voltage runaway and power fluctuations.

Targeted at a wide range of applications including utility boxes, backup power systems, industrial equipment, uninterruptible power supplies, renewable energy solutions, and consumer electronics, the ALD910030 dual MOSFET addresses the growing demand for advanced power management solutions.

Traditionally, supercapacitors with voltage ratings between 2.7V and 3.0V were commonly used. However, the emergence of 3.3V supercapacitors has necessitated the development of advanced voltage and leakage current balancing technologies. The SAB MOSFET effectively balances series-connected supercapacitors by dissipating minimal leakage currents, resulting in significant power savings.

The MOSFET is designed to operate within a wide temperature range from -40°C to +85°C and is factory-trimmed to meet specific voltage requirements. Supercapacitors are often connected in series to achieve desired voltage levels. For example, stacking four 3.3V-rated supercapacitors can create a 12V direct current supply, with the potential for fluctuations up to 13.2V.

The ALD910030SALI MOSFET is housed in an 8-pin SOIC package and is now available through leading distributors such as Digi-Key and Mouser. With pricing starting at $4.43 per unit for quantities of 50, this innovative power management solution offers a cost-effective and efficient option for applications requiring precise voltage and current balancing.